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<a href="elastic__solid_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* -------------------------------------------------------------------------*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">*                               SPHinXsys                                   *</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">* --------------------------------------------------------------------------*</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">* SPHinXsys (pronunciation: s&#39;finksis) is an acronym from Smoothed Particle *</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">* Hydrodynamics for industrial compleX systems. It provides C++ APIs for    *</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">* physical accurate simulation and aims to model coupled industrial dynamic *</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">* systems including fluid, solid, multi-body dynamics and beyond with SPH   *</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">* (smoothed particle hydrodynamics), a meshless computational method using  *</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">* particle discretization.                                                  *</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">* SPHinXsys is partially funded by German Research Foundation               *</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">* (Deutsche Forschungsgemeinschaft) DFG HU1527/6-1, HU1527/10-1             *</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">* and HU1527/12-1.                                                          *</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">* Portions copyright (c) 2017-2020 Technical University of Munich and       *</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">* the authors&#39; affiliations.                                                *</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">* Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); you may   *</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">* not use this file except in compliance with the License. You may obtain a *</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">* copy of the License at http://www.apache.org/licenses/LICENSE-2.0.        *</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">* --------------------------------------------------------------------------*/</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="base__material_8h.html">base_material.h</a>&quot;</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">using namespace </span><a class="code" href="namespacestd.html">std</a>;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespace_s_p_h.html">SPH</a> {</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keyword">class </span>ElasticSolidParticles;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <span class="keyword">class </span>ActiveMuscleParticles;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_elastic_solid.html">   58</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_solid.html">Solid</a></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    {</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        Real eta_0_;        <span class="comment">/*&gt; physical viscosity */</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        Real c_0_;          <span class="comment">/*&gt; speed of sound */</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        Real lambda_0_;     <span class="comment">/*&gt; First Lame parameter */</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <a class="code" href="class_s_p_h_1_1_elastic_solid_particles.html">ElasticSolidParticles</a>* elastic_particles_;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_elastic_solid.html#a64fe08dc1b52e6cd6d288bbdc46c019a">   68</a></span>&#160;        <a class="code" href="class_s_p_h_1_1_elastic_solid.html#a64fe08dc1b52e6cd6d288bbdc46c019a">ElasticSolid</a>() : <a class="code" href="class_s_p_h_1_1_solid.html">Solid</a>(), elastic_particles_(NULL),</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;            c_0_(1.0), eta_0_(0.0), lambda_0_(0.375) {};</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a>() {};</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <span class="keywordtype">void</span> assignElasticSolidParticles(ElasticSolidParticles* elastic_particles);</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <a class="code" href="class_real.html">Real</a> getReferenceSoundSpeed() { <span class="keywordflow">return</span> c_0_; };</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <a class="code" href="class_real.html">Real</a> getPhysicalViscosity() { <span class="keywordflow">return</span> eta_0_; };</div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_elastic_solid.html#acdc56e06c1a238acdfcd4b4b0201e691">   77</a></span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a>* <a class="code" href="class_s_p_h_1_1_elastic_solid.html#acdc56e06c1a238acdfcd4b4b0201e691">PointToThisObject</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; };</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="keyword">virtual</span> Real SetSoundSpeed() = 0;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        <span class="keyword">virtual</span> Real getViscousTimeStepSize(Real smoothing_length);</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        <span class="keyword">virtual</span> Real getNumericalViscosity(Real smoothing_length);</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <span class="keyword">virtual</span> Matd ConstitutiveRelation(Matd&amp; deform_grad, <span class="keywordtype">size_t</span> particle_index_i) = 0;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="keyword">virtual</span> Matd NumericalDampingStress(Matd&amp; deform_grad, Matd&amp; deform_grad_rate, Real numerical_viscosity, <span class="keywordtype">size_t</span> particle_index_i);</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    };</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_linear_elastic_solid.html">  108</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a></div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    {</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        Real E_0_;  <span class="comment">/*&gt; Youngs modulus */</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        Real nu_;   <span class="comment">/*&gt; poisson ratio */</span></div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_linear_elastic_solid.html#a1a27fb4f8bd19e3d6af24b2392487a37">  114</a></span>&#160;        Real <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html#a1a27fb4f8bd19e3d6af24b2392487a37">G_0_</a>; </div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <span class="keyword">virtual</span> Real SetShearModulus();</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        <span class="keyword">virtual</span> Real SetLambda();</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> assignDerivedMaterialParameters() <span class="keyword">override</span>;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_linear_elastic_solid.html#a35501f51dc62cbafae05bf44d14413bf">  124</a></span>&#160;        <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html#a35501f51dc62cbafae05bf44d14413bf">LinearElasticSolid</a>() : <a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a>(),</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;            E_0_(1.0), nu_(1.0 / 3.0), G_0_(0.75) {</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;            material_name_ = <span class="stringliteral">&quot;LinearElasticSolid&quot;</span>;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        };</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a>() {};</div><div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_linear_elastic_solid.html#a1e06f73c01f9c486dffc2e9fff618eda">  130</a></span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a>* <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html#a1e06f73c01f9c486dffc2e9fff618eda">PointToThisObject</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; };</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        <span class="keyword">virtual</span> Real SetSoundSpeed() <span class="keyword">override</span>;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        <span class="keyword">virtual</span> Matd ConstitutiveRelation(Matd&amp; deform_grad, <span class="keywordtype">size_t</span> particle_index_i) <span class="keyword">override</span>;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    };</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_neo_hookean_solid.html">  142</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_neo_hookean_solid.html">NeoHookeanSolid</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a></div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    {</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_neo_hookean_solid.html#a2d9a05776624fc1ea1ed301f76e3dae2">  146</a></span>&#160;        <a class="code" href="class_s_p_h_1_1_neo_hookean_solid.html#a2d9a05776624fc1ea1ed301f76e3dae2">NeoHookeanSolid</a>() : <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a>() {</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            material_name_ = <span class="stringliteral">&quot;NeoHookeanSolid&quot;</span>;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        };</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1_neo_hookean_solid.html">NeoHookeanSolid</a>() {};</div><div class="line"><a name="l00151"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_neo_hookean_solid.html#aafe68e6b513b0993ff1d6b796a4ad394">  151</a></span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_p_h_1_1_neo_hookean_solid.html">NeoHookeanSolid</a>* <a class="code" href="class_s_p_h_1_1_neo_hookean_solid.html#aafe68e6b513b0993ff1d6b796a4ad394">PointToThisObject</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; };</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        <span class="keyword">virtual</span> Matd ConstitutiveRelation(Matd&amp; deform_grad, <span class="keywordtype">size_t</span> particle_index_i) <span class="keyword">override</span>;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    };</div><div class="line"><a name="l00163"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_fene_neo_hookean_solid.html">  163</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_fene_neo_hookean_solid.html">FeneNeoHookeanSolid</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a></div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    {</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_fene_neo_hookean_solid.html#a83218f7184a423dfbb4e537a67f1bcb2">  167</a></span>&#160;        Real <a class="code" href="class_s_p_h_1_1_fene_neo_hookean_solid.html#a83218f7184a423dfbb4e537a67f1bcb2">j1_m_</a>;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00171"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_fene_neo_hookean_solid.html#ab2a199f95fb9da9afb4cef642b2dcc75">  171</a></span>&#160;        <a class="code" href="class_s_p_h_1_1_fene_neo_hookean_solid.html#ab2a199f95fb9da9afb4cef642b2dcc75">FeneNeoHookeanSolid</a>() : <a class="code" href="class_s_p_h_1_1_linear_elastic_solid.html">LinearElasticSolid</a>(), j1_m_(1.0) {</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;            material_name_ = <span class="stringliteral">&quot;FeneNeoHookeanSolid&quot;</span>;</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        };</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1_fene_neo_hookean_solid.html">FeneNeoHookeanSolid</a>() {};</div><div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_fene_neo_hookean_solid.html#a099c11aa5b687b848fbfa1ab227e4a7d">  176</a></span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_p_h_1_1_fene_neo_hookean_solid.html">FeneNeoHookeanSolid</a>* <a class="code" href="class_s_p_h_1_1_fene_neo_hookean_solid.html#a099c11aa5b687b848fbfa1ab227e4a7d">PointToThisObject</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; };</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        <span class="keyword">virtual</span> Matd ConstitutiveRelation(Matd&amp; deform_grad, <span class="keywordtype">size_t</span> particle_index_i) <span class="keyword">override</span>;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    };</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div><div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html">  189</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_muscle.html">Muscle</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a></div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    {</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html#aac40311b87bc828c9e3fc261582bcb82">  192</a></span>&#160;        Vecd f0_, <a class="code" href="class_s_p_h_1_1_muscle.html#aac40311b87bc828c9e3fc261582bcb82">s0_</a>;              </div><div class="line"><a name="l00193"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html#ad2af528a9b76f4fd116b8170bee24619">  193</a></span>&#160;        Matd f0f0_, s0s0_, <a class="code" href="class_s_p_h_1_1_muscle.html#ad2af528a9b76f4fd116b8170bee24619">f0s0_</a>;   </div><div class="line"><a name="l00195"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html#a8b6a893f4a75ccfb0961e7d3bbc226d3">  195</a></span>&#160;        Real a_0_[4], b_0_[4];</div><div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html#a7ebf079d70936900e45910680fa1f34f">  197</a></span>&#160;        Real <a class="code" href="class_s_p_h_1_1_muscle.html#a7ebf079d70936900e45910680fa1f34f">bulk_modulus_</a>;</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160; 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           f0_(0), s0_(0), f0f0_(0), f0s0_(0), s0s0_(0) {</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;            material_name_ = <span class="stringliteral">&quot;Muscle&quot;</span>;</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        };</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        <span class="keyword">virtual</span> ~Muscle() {};</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_real.html">Real</a> SetSoundSpeed() <span class="keyword">override</span>;</div><div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html#a209e27b36d1a1203f824fad16b671c1c">  215</a></span>&#160;        <span class="keyword">virtual</span> Matd <a class="code" href="class_s_p_h_1_1_muscle.html#a209e27b36d1a1203f824fad16b671c1c">getMuscleFiber</a>(<span class="keywordtype">size_t</span> particle_index_i) { <span class="keywordflow">return</span> f0f0_; };</div><div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_muscle.html#a532e3f907b8e4fc65474749d25e8f661">  217</a></span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_p_h_1_1_muscle.html">Muscle</a>* <a class="code" href="class_s_p_h_1_1_muscle.html#a532e3f907b8e4fc65474749d25e8f661">PointToThisObject</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; };</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        <span class="keyword">virtual</span> Matd ConstitutiveRelation(Matd&amp; deform_grad, <span class="keywordtype">size_t</span> particle_index_i) <span class="keyword">override</span>;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    };</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div><div class="line"><a name="l00230"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_locally_orthotropic_muscle.html">  230</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html">LocallyOrthotropicMuscle</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_muscle.html">Muscle</a></div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    {</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a6947cf31e788196aca5896f8b0a3eec3">  233</a></span>&#160;        StdVec&lt;Matd&gt; local_f0f0_, local_s0s0_, <a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a6947cf31e788196aca5896f8b0a3eec3">local_f0s0_</a>;         </div><div class="line"><a name="l00234"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a0becb71ec78d1db2a6157b5f0f8ee773">  234</a></span>&#160; 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       StdVec&lt;Vecd&gt; <a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#adb1a6e6c740a7599ae30a6b1e7a496e0">local_s0_</a>;</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div><div class="line"><a name="l00244"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a3836bce8125666689d12f8e2294da7c3">  244</a></span>&#160;        <a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a3836bce8125666689d12f8e2294da7c3">LocallyOrthotropicMuscle</a>() : <a class="code" href="class_s_p_h_1_1_muscle.html">Muscle</a>() {</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;            material_name_ = <span class="stringliteral">&quot;LocallyOrthotropicMuscle&quot;</span>;</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;        };</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html">LocallyOrthotropicMuscle</a>() {};</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;</div><div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#ad8e4ae5d55abf94e00bdfb16788f062f">  250</a></span>&#160;        <span class="keyword">virtual</span> Matd <a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#ad8e4ae5d55abf94e00bdfb16788f062f">getMuscleFiber</a>(<span class="keywordtype">size_t</span> particle_index_i)<span class="keyword"> override </span>{ <span class="keywordflow">return</span> local_f0f0_[particle_index_i]; };</div><div class="line"><a name="l00252"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#ad8b8205ecdac7b0a2b4fd9c86611ec2a">  252</a></span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html">LocallyOrthotropicMuscle</a>* <a class="code" href="class_s_p_h_1_1_locally_orthotropic_muscle.html#ad8b8205ecdac7b0a2b4fd9c86611ec2a">PointToThisObject</a>()<span class="keyword"> override </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; };</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160; 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       <span class="keyword">virtual</span> <span class="keywordtype">void</span> WriteMaterialPropertyToVtuFile(ofstream&amp; output_file) <span class="keyword">override</span>;</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    };</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_active_muscle.html">  276</a></span>&#160;    <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1_active_muscle.html">ActiveMuscle</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_elastic_solid.html">ElasticSolid</a></div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    {</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        <a class="code" href="class_s_p_h_1_1_active_muscle_particles.html">ActiveMuscleParticles</a>* active_muscle_particles_;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        <a class="code" href="class_s_p_h_1_1_muscle.html">Muscle</a>&amp; muscle_;</div><div class="line"><a name="l00283"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1_active_muscle.html#ae412706314e8c4f70ed0b0abeebe4ba9">  283</a></span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_s_p_h_1_1_active_muscle.html#ae412706314e8c4f70ed0b0abeebe4ba9">assignDerivedMaterialParameters</a>()<span class="keyword"> override </span>{</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;            ElasticSolid::assignDerivedMaterialParameters();</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160; 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output_file) <span class="keyword">override</span>;</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    };</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;}</div><div class="ttc" id="class_s_p_h_1_1_fene_neo_hookean_solid_html_ab2a199f95fb9da9afb4cef642b2dcc75"><div class="ttname"><a href="class_s_p_h_1_1_fene_neo_hookean_solid.html#ab2a199f95fb9da9afb4cef642b2dcc75">SPH::FeneNeoHookeanSolid::FeneNeoHookeanSolid</a></div><div class="ttdeci">FeneNeoHookeanSolid()</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:171</div></div>
<div class="ttc" id="class_s_p_h_1_1_base_particles_html"><div class="ttname"><a href="class_s_p_h_1_1_base_particles.html">SPH::BaseParticles</a></div><div class="ttdoc">Particles with essential (geometric and kinematic) data. There are three types of particles...</div><div class="ttdef"><b>Definition:</b> base_particles.h:87</div></div>
<div class="ttc" id="class_s_p_h_1_1_elastic_solid_particles_html"><div class="ttname"><a href="class_s_p_h_1_1_elastic_solid_particles.html">SPH::ElasticSolidParticles</a></div><div class="ttdoc">A group of particles with elastic body particle data. </div><div class="ttdef"><b>Definition:</b> solid_particles.h:161</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html">SPH::Muscle</a></div><div class="ttdoc">Globally orthotropic muscle. </div><div class="ttdef"><b>Definition:</b> elastic_solid.h:189</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html_aac40311b87bc828c9e3fc261582bcb82"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html#aac40311b87bc828c9e3fc261582bcb82">SPH::Muscle::s0_</a></div><div class="ttdeci">Vecd s0_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:192</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html_ad8b8205ecdac7b0a2b4fd9c86611ec2a"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html#ad8b8205ecdac7b0a2b4fd9c86611ec2a">SPH::LocallyOrthotropicMuscle::PointToThisObject</a></div><div class="ttdeci">virtual LocallyOrthotropicMuscle * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:252</div></div>
<div class="ttc" id="class_s_p_h_1_1_linear_elastic_solid_html_a35501f51dc62cbafae05bf44d14413bf"><div class="ttname"><a href="class_s_p_h_1_1_linear_elastic_solid.html#a35501f51dc62cbafae05bf44d14413bf">SPH::LinearElasticSolid::LinearElasticSolid</a></div><div class="ttdeci">LinearElasticSolid()</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:124</div></div>
<div class="ttc" id="class_s_p_h_1_1_neo_hookean_solid_html_a2d9a05776624fc1ea1ed301f76e3dae2"><div class="ttname"><a href="class_s_p_h_1_1_neo_hookean_solid.html#a2d9a05776624fc1ea1ed301f76e3dae2">SPH::NeoHookeanSolid::NeoHookeanSolid</a></div><div class="ttdeci">NeoHookeanSolid()</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:146</div></div>
<div class="ttc" id="class_s_p_h_1_1_solid_html"><div class="ttname"><a href="class_s_p_h_1_1_solid.html">SPH::Solid</a></div><div class="ttdoc">Base class of all solids. </div><div class="ttdef"><b>Definition:</b> base_material.h:140</div></div>
<div class="ttc" id="class_s_p_h_1_1_linear_elastic_solid_html"><div class="ttname"><a href="class_s_p_h_1_1_linear_elastic_solid.html">SPH::LinearElasticSolid</a></div><div class="ttdoc">Isotropic linear elastic solid. </div><div class="ttdef"><b>Definition:</b> elastic_solid.h:108</div></div>
<div class="ttc" id="namespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div></div>
<div class="ttc" id="class_s_p_h_1_1_linear_elastic_solid_html_a1e06f73c01f9c486dffc2e9fff618eda"><div class="ttname"><a href="class_s_p_h_1_1_linear_elastic_solid.html#a1e06f73c01f9c486dffc2e9fff618eda">SPH::LinearElasticSolid::PointToThisObject</a></div><div class="ttdeci">virtual LinearElasticSolid * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:130</div></div>
<div class="ttc" id="class_s_p_h_1_1_active_muscle_html_a75a81743c19a6c5e31d5df07e2b1d7d9"><div class="ttname"><a href="class_s_p_h_1_1_active_muscle.html#a75a81743c19a6c5e31d5df07e2b1d7d9">SPH::ActiveMuscle::PointToThisObject</a></div><div class="ttdeci">virtual ActiveMuscle * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:300</div></div>
<div class="ttc" id="class_s_p_h_1_1_active_muscle_html_ae412706314e8c4f70ed0b0abeebe4ba9"><div class="ttname"><a href="class_s_p_h_1_1_active_muscle.html#ae412706314e8c4f70ed0b0abeebe4ba9">SPH::ActiveMuscle::assignDerivedMaterialParameters</a></div><div class="ttdeci">virtual void assignDerivedMaterialParameters() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:283</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html_a2ece0f5bbc853338fa973d9795e0dffb"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html#a2ece0f5bbc853338fa973d9795e0dffb">SPH::Muscle::Muscle</a></div><div class="ttdeci">Muscle()</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:205</div></div>
<div class="ttc" id="class_real_html"><div class="ttname"><a href="class_real.html">Real</a></div></div>
<div class="ttc" id="class_s_p_h_1_1_active_muscle_particles_html"><div class="ttname"><a href="class_s_p_h_1_1_active_muscle_particles.html">SPH::ActiveMuscleParticles</a></div><div class="ttdoc">A group of particles with active muscle particle data. </div><div class="ttdef"><b>Definition:</b> solid_particles.h:237</div></div>
<div class="ttc" id="base__material_8h_html"><div class="ttname"><a href="base__material_8h.html">base_material.h</a></div><div class="ttdoc">This is the base classes of all materials. A function in a derived material class returns a value wit...</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html_ad2af528a9b76f4fd116b8170bee24619"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html#ad2af528a9b76f4fd116b8170bee24619">SPH::Muscle::f0s0_</a></div><div class="ttdeci">Matd f0s0_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:193</div></div>
<div class="ttc" id="class_s_p_h_1_1_fene_neo_hookean_solid_html"><div class="ttname"><a href="class_s_p_h_1_1_fene_neo_hookean_solid.html">SPH::FeneNeoHookeanSolid</a></div><div class="ttdef"><b>Definition:</b> elastic_solid.h:163</div></div>
<div class="ttc" id="class_s_p_h_1_1_fene_neo_hookean_solid_html_a83218f7184a423dfbb4e537a67f1bcb2"><div class="ttname"><a href="class_s_p_h_1_1_fene_neo_hookean_solid.html#a83218f7184a423dfbb4e537a67f1bcb2">SPH::FeneNeoHookeanSolid::j1_m_</a></div><div class="ttdeci">Real j1_m_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:167</div></div>
<div class="ttc" id="class_s_p_h_1_1_elastic_solid_html_a64fe08dc1b52e6cd6d288bbdc46c019a"><div class="ttname"><a href="class_s_p_h_1_1_elastic_solid.html#a64fe08dc1b52e6cd6d288bbdc46c019a">SPH::ElasticSolid::ElasticSolid</a></div><div class="ttdeci">ElasticSolid()</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:68</div></div>
<div class="ttc" id="class_s_p_h_1_1_elastic_solid_html"><div class="ttname"><a href="class_s_p_h_1_1_elastic_solid.html">SPH::ElasticSolid</a></div><div class="ttdoc">Abstract class for a generalized elastic solid. </div><div class="ttdef"><b>Definition:</b> elastic_solid.h:58</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html_adb1a6e6c740a7599ae30a6b1e7a496e0"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html#adb1a6e6c740a7599ae30a6b1e7a496e0">SPH::LocallyOrthotropicMuscle::local_s0_</a></div><div class="ttdeci">StdVec&lt; Vecd &gt; local_s0_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:241</div></div>
<div class="ttc" id="class_s_p_h_1_1_active_muscle_html_a0993fcc9a494312e0250a939af483abb"><div class="ttname"><a href="class_s_p_h_1_1_active_muscle.html#a0993fcc9a494312e0250a939af483abb">SPH::ActiveMuscle::ActiveMuscle</a></div><div class="ttdeci">ActiveMuscle(Muscle *muscle)</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:288</div></div>
<div class="ttc" id="class_s_p_h_1_1_neo_hookean_solid_html_aafe68e6b513b0993ff1d6b796a4ad394"><div class="ttname"><a href="class_s_p_h_1_1_neo_hookean_solid.html#aafe68e6b513b0993ff1d6b796a4ad394">SPH::NeoHookeanSolid::PointToThisObject</a></div><div class="ttdeci">virtual NeoHookeanSolid * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:151</div></div>
<div class="ttc" id="class_s_p_h_1_1_linear_elastic_solid_html_a1a27fb4f8bd19e3d6af24b2392487a37"><div class="ttname"><a href="class_s_p_h_1_1_linear_elastic_solid.html#a1a27fb4f8bd19e3d6af24b2392487a37">SPH::LinearElasticSolid::G_0_</a></div><div class="ttdeci">Real G_0_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:114</div></div>
<div class="ttc" id="class_s_p_h_1_1_fene_neo_hookean_solid_html_a099c11aa5b687b848fbfa1ab227e4a7d"><div class="ttname"><a href="class_s_p_h_1_1_fene_neo_hookean_solid.html#a099c11aa5b687b848fbfa1ab227e4a7d">SPH::FeneNeoHookeanSolid::PointToThisObject</a></div><div class="ttdeci">virtual FeneNeoHookeanSolid * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:176</div></div>
<div class="ttc" id="class_s_p_h_1_1_elastic_solid_html_acdc56e06c1a238acdfcd4b4b0201e691"><div class="ttname"><a href="class_s_p_h_1_1_elastic_solid.html#acdc56e06c1a238acdfcd4b4b0201e691">SPH::ElasticSolid::PointToThisObject</a></div><div class="ttdeci">virtual ElasticSolid * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:77</div></div>
<div class="ttc" id="class_s_p_h_1_1_neo_hookean_solid_html"><div class="ttname"><a href="class_s_p_h_1_1_neo_hookean_solid.html">SPH::NeoHookeanSolid</a></div><div class="ttdoc">Neo-Hookean solid. </div><div class="ttdef"><b>Definition:</b> elastic_solid.h:142</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html_ad8e4ae5d55abf94e00bdfb16788f062f"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html#ad8e4ae5d55abf94e00bdfb16788f062f">SPH::LocallyOrthotropicMuscle::getMuscleFiber</a></div><div class="ttdeci">virtual Matd getMuscleFiber(size_t particle_index_i) override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:250</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html_a6947cf31e788196aca5896f8b0a3eec3"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a6947cf31e788196aca5896f8b0a3eec3">SPH::LocallyOrthotropicMuscle::local_f0s0_</a></div><div class="ttdeci">StdVec&lt; Matd &gt; local_f0s0_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:233</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html_a7ebf079d70936900e45910680fa1f34f"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html#a7ebf079d70936900e45910680fa1f34f">SPH::Muscle::bulk_modulus_</a></div><div class="ttdeci">Real bulk_modulus_</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:197</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html_a0becb71ec78d1db2a6157b5f0f8ee773"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a0becb71ec78d1db2a6157b5f0f8ee773">SPH::LocallyOrthotropicMuscle::assignDerivedMaterialParameters</a></div><div class="ttdeci">virtual void assignDerivedMaterialParameters() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:234</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html">SPH::LocallyOrthotropicMuscle</a></div><div class="ttdoc">muscle model is a anisotropic material in which there are local fiber direction and cross-fiber sheet...</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:230</div></div>
<div class="ttc" id="class_s_p_h_1_1_locally_orthotropic_muscle_html_a3836bce8125666689d12f8e2294da7c3"><div class="ttname"><a href="class_s_p_h_1_1_locally_orthotropic_muscle.html#a3836bce8125666689d12f8e2294da7c3">SPH::LocallyOrthotropicMuscle::LocallyOrthotropicMuscle</a></div><div class="ttdeci">LocallyOrthotropicMuscle()</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:244</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html_a532e3f907b8e4fc65474749d25e8f661"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html#a532e3f907b8e4fc65474749d25e8f661">SPH::Muscle::PointToThisObject</a></div><div class="ttdeci">virtual Muscle * PointToThisObject() override</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:217</div></div>
<div class="ttc" id="class_s_p_h_1_1_active_muscle_html"><div class="ttname"><a href="class_s_p_h_1_1_active_muscle.html">SPH::ActiveMuscle</a></div><div class="ttdoc">Here, the active reponse is considered. </div><div class="ttdef"><b>Definition:</b> elastic_solid.h:276</div></div>
<div class="ttc" id="class_s_p_h_1_1_muscle_html_a209e27b36d1a1203f824fad16b671c1c"><div class="ttname"><a href="class_s_p_h_1_1_muscle.html#a209e27b36d1a1203f824fad16b671c1c">SPH::Muscle::getMuscleFiber</a></div><div class="ttdeci">virtual Matd getMuscleFiber(size_t particle_index_i)</div><div class="ttdef"><b>Definition:</b> elastic_solid.h:215</div></div>
<div class="ttc" id="namespace_s_p_h_html"><div class="ttname"><a href="namespace_s_p_h.html">SPH</a></div><div class="ttdef"><b>Definition:</b> base_body_supplementary.cpp:11</div></div>
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